This is an interesting topic. I'm translating my comic from Ukrainian to English, and I found it really challenging to choose names that I liked and that were somewhat adapted too. I eventually decided that the characters should all refer to each other by nicknames or pseudonyms that are somehow related to their names or surnames.
The main character is nicknamed 'Aki'— is a short form of his surname, but his real name is Denis. 'Key' is the heroine's nickname, which is connected to the idea of a key,,,
Honestly, I think that in today’s world with social media, it's not unusual to call each other by pseudonyms, especially since they’re all techies